schwuoeow



2 Sheets-Sheet 1. H. P. SGHWUOHOW.

(No Model.)

' LIQUID PUMP.

Patented Dem 5, 188.2

2 Sheets-Sheet 2.

(No Model.)

H. F. SOHWUGHOW;

LIQUID PUMP.

Patented Dec. 5-, 1 882 a. m F.

V \X/mJEEEEEQ erM is 1 PETERS. Plmxwulhn m nur. Wnahin tan. D4 (3.

. UNITED STATES PATENT OFFICE.

HERMAN F. SCHWUCHOW, OF CHICAGO, IIJLINOIS, ASSIGNOR TO EDWARD T. MASON AND FRANK A. BERGMAN, OF SAME PLACE. I

LIQUID-PUMP.

SPECIFICATION forming part of Letters Patent No. 268,435, dated December 5, 1882,

Application filed April 20, 1881. (No model.)

To all whom it may concern.-

Be it known that I, HERMAN F. ScHW marrow, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Liquid-Pumps, of which the following is a specification.

My invention relates to that class of pumps which are usually employed in oil-tanks, though it is capable of use elsewhere. By it I have endeavored to simplify the structure without decreasing the usefulness of the pump; and the invention consists in the construction of some of the parts, as hereinafter set forth.

In'the accompanying drawings, Figure] is r a side elevation of my improved pump. Fig. 2 is a horizontal section on the line a: w of Fig.

1. Fig. 3 is a vertical section on the line y y.

. tube containing the ordinary valve'carrying rod A.

B is the air-chamber for containing the air which cushions the stroke of the pump-rod.

C is the lever, which reciprocates the pumprod, made of round iron, with its ends bentone to forma crank, c, which is connected to the pump-rod by a pivot-joint, and the other to form acrauk-handle, cthe middle portion, 0 or the fulcrum of the lever being provided with a hearing, as stated below.

A casing or tube, D, is secured in the side of the chamber B. It projects to the interior of said chamber, and is of such length as to give the lever a bearing, which will hold it against any tendency to wabble, growing out ofthe twisting action produced by the application of power to the handle. At its outer end it is preferably reduced in diameter, so as to permit the slipping upon it of a section of rubber tubing, d, which encircles and closely fits the lever. I thus obtain an air-tight joint between the journal of the lever and the bearing, and prevent the loss of air from the chamber B. The rubber is almost unaifected by this use, as the working of the handle twists it only slightly.

An exterior casing, E, may be employed to cover the rubber, and also to give additional bearing to the lever, if deemed desirable. I use it for both purposes.

F is the outlet-tube, extending to the bottom of the air-chamber in the usual manner.

If the rubber has any tendency to slip, either on the lever or on the tube, it may be tightened by twine, or otherwise.

I hereby disclaim the construction shown in the patent to Laws and Cooke, No. 115,745, granted June 6, 1871.

I claim-- 7 In a pump, the combination of the air-chamber, the pump-rod, and the lever actuating the rod, said lever being extended through the side of the chamber to a connection with the rod, and fulcrumed in an air-tight bearing "consisting of the rubber tubing encircling both the lever and its bearing, substantially as specified.

H. F. SCHWUOHOW. Witnesses:

H. M. MUNDAY, T. EVERETT BROWN. 

